Austrian silver verge with concealed erotic scene Circa 1800

Silver open faced erotic watch by Anton Reinberger
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An Austrian silver open faced keywound verge watch with concealed erotic scene, circa 1800. Keywound verge movement, chain fusée. Engine turned silver dial, eccentric white enamel time display with Breguet numerals, two lozenge shaped gilt panels each engraved with a putto on either side, an engine turned disc at the top opening to reveal a painted polychrome enamel erotic scene. Associated case with engraved band. Movement signed.
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Diameter: 54 mm
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Signed: Anton Reinberger in Wien